Choice of adhesive applying in pointing prism for aerospace optics remote sensor

The stability of space remote pointing mirror plays a vital role in improving image geometric accuracy, and it is determined by adhesives. First of all, the requirement of remote sensor to pointing mirror's stability was analyzed in this paper. Then the three commonly used for aerospace adhesive were compared comprehensively. Combining with the actual requirements of pointing mirror, HY914 and SE-14-80 adhesives were chose to compare the stress of glue bonding. By setting a reasonable curing process for both adhesives, and under the same conditions, the pointing stability was examined before and after the test verification. Experimental results show that with the specific curing process,the pointing error of pointing mirror using SE-14-80 adhesive was 1 before and after bonding, and SE-14-80 is more suitable for use in bonding in space optical remote sensor pointing mirror. Given its excellent adhesion, this adhesive is applied in a research project.